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Many surveys suffer from low response rates and therefore carry a risk of non-response bias. The problem is more severe in panel surveys because sample units are subject to non-response repeatedly. Low response rates often lead to a sample representativeness problem and threaten the validity of the survey. A better understanding of the survey participation behavior can provide guidance for survey design to increase the response rates and to build an effective non-response bias correction procedure. It is generally believed that non-response is a combined result of social environment, survey...

This book review series presents current trends in modern biotechnology. Special volumes are dedicated to selected topics which focus on new biotechnological products and new processes for their synthesis and purification.In general, special volumes are edited by well-known guest editors.